Table 2.
Boundaries and fit values for plantar flexor muscle–tendon and reflex parameters. The muscle–tendon parameters were determined as described in Krishnaswamy et al. [13] and fixed during reflex parameter fitting. GAS, gastrocnemius; SOL, soleus.
| parameter | units | min. val. | max. val. | fit val. |
|---|---|---|---|---|
| GAS Fmax | N | 1398 | 6990 | 1759 |
| GAS lslack | m | 0.282 | 0.460 | 0.399 |
| GAS Ksh | — | 1 | 5 | 2.81 |
| GAS λref | — | 0.02 | 0.09 | 0.042 |
| GAS GF | N−1 | 0 | 5e − 4 | 1.45e − 4 |
| GAS Fo | N | 0 | 203 | 78.3 |
| GAS Gl | m−1 | 0 | 10 | 3.66 |
| GAS lo | m | 3.05e − 2 | 4.25e − 2 | 3.09e − 2 |
| GAS Gv | s m−1 | 0 | 2 | 0.167 |
| GAS vo | m s−1 | 0 | 0.278 | 2.23e − 4 |
| SOL Fmax | N | 3650 | 18251 | 7142 |
| SOL lslack | m | 0.175 | 0.293 | 0.250 |
| SOL Ksh | — | 1 | 5 | 2.25 |
| SOL λref | — | 0.02 | 0.09 | 0.083 |
| SOL GF | N−1 | 0 | 1e − 4 | 2.62e − 5 |
| SOL Fo | N | 0 | 543 | 10.5 |
| SOL Gl | m−1 | 0 | 10 | 2.44 |
| SOL lo | m | 0.015 | 2.87e − 2 | 1.75e − 2 |
| SOL Gv | s m−1 | 0 | 2 | 5.65e − 2 |
| SOL vo | m s−1 | 0 | 0.196 | 1.29e − 3 |